Question

4.52➕0.45➕5.48✖️0.45简便算法？

Answer 1

4.52➕0.45➕5.48✖️0.45
=0.45*10➕0.45➕5.48✖️0.45+0.02
=0.45*（10+1+5.48）+0.02
=0.45*16.48+0.02
=0.9*8.24+0.02
=8.24-0.824+0.02
=8.24-0.804
=7.436

Answer 2

应该是4.52×0.45+5.48×0.45吧
=（4.52+5.48）×0.45
=10×0.45
=4.5

Answer 3

4.52➕0.45➕5.48✖️0.45
你应该打错了一个符号，第一个符号应该是乘号，这样才可以提取公因数0.45，后面括号里就出现了四点52+5点四八，括号加出来就等于十，最后结果就等于4.5